Lidocaine Hydrochloride Bp B. Braun Melsungen (Lidocaine Hydrochloride Monohydrate)

Lidocaine is a local anesthetic used in various procedural and analgesic settings.

• Minor surgical or diagnostic procedures: provides rapid, reversible loss of sensation to facilitate pain‑free interventions.
• Epidural analgesia: delivers regional pain relief during labor, surgery or postoperative recovery.
• Intradermal skin testing: used as a control agent to assess hypersensitivity reactions.
• Intramuscular injection for pain control: offers targeted analgesia for musculoskeletal discomfort.

• Lidocaine blocks voltage‑gated sodium channels on neuronal membranes, stabilising the neuronal membrane and preventing the initiation and propagation of action potentials. By inhibiting sodium influx, it halts nerve impulse transmission, resulting in loss of sensation in the administered area without affecting surrounding tissues.

Lidocaine may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Burning or stinging at the injection site
• Tingling or numbness in the treated area
• Light‑headedness or dizziness
• Nausea or mild vomiting
• Transient hypotension
• Local erythema or swelling

Serious or Rare Side Effects

• Central nervous system toxicity (e.g., seizures, confusion)
• Cardiac arrhythmias or conduction disturbances
• Respiratory depression or apnea
• Severe allergic reactions (anaphylaxis, urticaria)
• Methemoglobinemia
• Persistent numbness or motor weakness beyond expected duration

Before using lidocaine, healthcare professionals should consider several safety measures.

• Allergy assessment: verify no known hypersensitivity to amide‑type local anesthetics.
• Dose calculation: ensure the prescribed amount does not exceed recommended maximums for the route.
• Cardiovascular monitoring: observe heart rate and blood pressure during epidural or high‑dose administration.
• Hepatic function: use caution in patients with severe liver impairment as metabolism may be reduced.
• Pregnancy and lactation: safety data are limited; weigh potential benefits against unknown risks.
• Concurrent anesthetics: avoid simultaneous use of multiple local anesthetics to prevent additive toxicity.
• Store below 25°C: keep in the original container, protect from light and moisture.

Lidocaine can interact with other medicines, altering its effectiveness or safety profile.

Major Interactions (Avoid)

• Class I antiarrhythmics (e.g., quinidine, procainamide): may increase cardiac toxicity.
• CYP1A2 or CYP3A4 inhibitors (e.g., cimetidine, erythromycin): can raise plasma lidocaine levels.
• Other amide‑type local anesthetics: additive neuro‑cardiac toxicity.

Moderate Interactions (Monitor Closely)

• Amiodarone: may modestly increase lidocaine concentrations.
• Beta‑blockers: can enhance bradycardic effects.
• CNS depressants (e.g., benzodiazepines, opioids): monitor for enhanced sedation.
• Diuretics: may affect plasma protein binding, altering free drug levels.